The ARC Riders are an elite time traveling force, dedicated to preserving history as it is, preventing (or reversing) any attempt by "Revisionist" time-travelers to change it, and severely punishing any Revisionists who they catch.
The Tank Lords (1997)—Includes Under the Hammer, Rolling Hot, Night March, Code-Name Feirefitz & The Tank Lords.
Paying the Piper (2002)
The Complete Hammer's Slammers Volume 1 (2005)—Omnibus edition; includes all the short stories.
The Complete Hammer's Slammers Volume 2 (2006)—Omnibus edition; includes At Any Price, Counting the Cost, Rolling Hot, The Warrior
The Complete Hammer's Slammers Volume 3 (2007)—Omnibus edition; includes The Sharp End, Paying the Piper, The Darkness
The Harriers
The Noble Savages (1993), novella in the Harriers shared world setting created by Gordon R. Dickson; first published in the anthology Blood and War (1993) edited by Dickson, reprinted in Drake's collection All the Way to the Gallows (1996)
The Sea Hag (1988), originally marketed as the first novel of The World of Crystal Walls but there will (most likely) be no further entries in this "series"[3]
Target (1989)—with Janet Morris
The Undesired Princess & The Enchanted Bunny (1990), anthology containing Drake's novella The Enchanted Bunny and the unrelated short novel The Undesired Princess by L. Sprague de Camp
The Hunter Returns (1991)—based on Jim Kjelgaard's Fire-Hunter, for his estate
Time Safari (1982), collects three Henry Vickers stories
From the Heart of Darkness (1983)
Lacey and His Friends (1986), collects all three stories about Jed Lacey as well as the two unconnected time travel stories "Travellers" and "Time Safari"
Vettius and His Friends (1989), collects all stories about Dama & Vettius as well as other historical fantasy stories
Old Nathan (1991), collects all five stories about the eponymous Old Nathan; the entire collection is also included in the Baen anthology Mountain Magic (2004)
The Military Dimension (1991)
Tyrannosaur (1994), collects three Henry Vickers stories
The Military Dimension Mark II (1995)
All the Way to the Gallows (1996)
Grimmer Than Hell (2003)
Other Times Than Peace (2006)
Night & Demons (2012)
Dinosaurs & a Dirigible (2014), collection of five time travel stories, all four Henry Vickers stories and the unrelated story "Travellers"
Three thematically linked anthologies containing SF hunting stories.
Fleet
With Bill Fawcett
The Fleet (1988)
Counterattack (1988)
Breakthrough (1989)
Sworn Allies (1990)
Total War (1990)
Crisis (1991)
Battlestation
With Bill Fawcett
Battlestation (1992)
The Vanguard (1993)
Battlestations (2011)—omnibus compendium of Battlestation and The Vanguard
Short stories
"Denkirch" in Travellers by Night (1967), Balefires (2007)
"Lord of the Depths" in Dark Things (1971)
"Arclight" in The Magazine of Fantasy and Science Fiction (April 1973)
"Contact!" in Analog Science Fiction/Science Fact (October 1974), Body Armor: 2000 (1986)
"Under the Hammer" in Galaxy Science Fiction (October 1974), Hammer's Slammers (1979)
"The Butcher's Bill" in Galaxy Science Fiction (November 1974), Combat SF (1975), Hammer's Slammers (1979), Combat SF (1981), Hammer's Slammers (1987)
"Something Had to Be Done" in The Magazine of Fantasy and Science Fiction (February 1975), The Year's Best Horror Stories: Series IV (1976), From the Heart of Darkness (1983), 100 Vicious Little Vampire Stories (1995)
"Ranks of Bronze" in Galaxy Science Fiction (August 1975), There Will Be War (1983), Vettius and His Friends (1989)
"But Loyal to His Own" in Galaxy Science Fiction (October 1975), Hammer's Slammers (1979)
"Awakening" in Nameless Places (1975)
"Children of the Forest" in The Magazine of Fantasy and Science Fiction (November 1976), The Year's Best Horror Stories: Series V (1977), From the Heart of Darkness (1983), Balefires (2007)
"Blood Debt" in The 4th Mayflower Book of Black Magic Stories (1976), From the Heart of Darkness (1983)
"Firefight" in Frights (1976), From the Heart of Darkness (1983)
"The Hunting Ground" in Superhorror (1976), From the Heart of Darkness (1983)
"Nation Without Walls" in Analog Science Fiction/Science Fact (July 1977)
"The Last Battalion" in Analog Science Fiction/Science Fact (September 1977)
"The Barrow Troll" in Savage Heroes (1977), Whispers (1977), The World Fantasy Awards Volume Two (1980), From the Heart of Darkness (1983), Vettius and His Friends (1989), Balefires (2007)
"Smokie Joe" in More Devil's Kisses (1977), Terrors (1982), From the Heart of Darkness (1983), Balefires (2007)
"Best of Luck" in The Year's Best Horror Stories: Series VI (1978), From the Heart of Darkness (1983)
"Caught in the Crossfire" in Chrysalis 2 (1978), Hammer's Slammers (1979), Caught in the Crossfire (1998)
"Cultural Conflict" in Destinies (January/February 1979), Hammer's Slammers (1979)
"The Predators" in Destinies (October/December 1979)
"Hangman" in Hammer's Slammers (1979), Supertanks (1987)
"The Red Leer" in Whispers II (1979), From the Heart of Darkness (1983), Balefires (2007)
"Standing Down" in Hammer's Slammers (1979)
"Underground" in Destinies (February/March 1980)
"Men Like Us" in Omni (May 1980), From the Heart of Darkness (1983)
"The Automatic Rifleman" in Destinies (Fall 1980), From the Heart of Darkness (1983)
"Elfin Pipes of Northworld" in The New York Review of Science Fiction (December 1990)
"Looking Forward: Excerpt from Northworld: Justice" in Amazing Stories (March 1992)
"Looking Forward: Excerpt from The Sharp End" in Amazing Stories (October 1993)
"Cannibal Plants From Heck" in Alien Pregnant By Elvis (1994)
"Airborne All the Way!" in Magic, the Gathering: Tapestries (1995)
"To Bring the Light" in Locus (August 1996)
"The Waiting Bullet" in Locus (August 1996)
"A Grand Tour" in More than Honor (1998)
"The Immovable Object" in Caught in the Crossfire (1998)
"With the Sword He Must Be Slain" in Armageddon (1998)
"A Very Offensive Weapon" in All the Way to the Gallows (1995)
"The Tradesmen" in Grimmer Than Hell (2000)
"A Death in Peacetime" in The Complete Hammer's Slammers Volume 1 (2005)
"Dragon, the Book" in Catfantastic V (1999)
The Dama & Vettius stories
Sword & sorcery fantasy stories set at the time of the later Roman Empire. All of these stories have been collected in Vettius and His Friends (1989) which also contains a couple more unrelated stories.
"The False Prophet", first published in (1989)
"Black Iron", first published in Nameless Places (1975)
"The Mantichore", first published in Swords Against Darkness III (1978)
"The Shortest Way", first published in Whispers #3 (March 1974)
"From the Dark Waters", first published in Waves of Terror: Weird Stories About the Sea (1976)
"Nemesis Place", first published in Fantastic (April 1978)
"Dragons' Teeth", first published in Midnight Sun (Summer-Fall 1975)
The Henry Vickers stories
These time travel stories about the dinosaur-hunting Henry Vickers have been published in various places. Time Safari (1982) collects the first three stories, Tyrannosaur (1993) also collects three stories but replaces "Calibration Run" with "King Tyrant Lizard". All four stories were first published together in Dinosaurs & a Dirigible (2014) which also contains the unrelated time travel story "Travellers".
"Time Safari", first published in Destinies (Spring 1981)
"Calibration Run", first published in Time Safari (1982)
"Boundary Layer", first published in Time Safari (1982)
"King Tyrant Lizard", first published in Tyrannosaur (1993)