Here are a few sample ideas for PC groups involved in war stories.

the outsiders (fantasy)

Traveling across the Great Sea from their home in Waldlund to the Westward Atolls, a galleon is wrecked by a magical storm that deposits a group of adventurers on the shores of Volcryn, the Dark Land. There, the group is pressganged into service as soldiers by the warrior-mage Vedan; While Rothamer the dwarf and elven ranger Fynn are enticed by the prospect of gold and booty, druidess Safah sees hints of evil in their new master and fears that her half-ore brother Bren will be swayed from the path of pure magic to serve the secretive wizard...

the crooked cross (horror)

The prospect of war in Europe seemed remote to the science team at Waywich University, but as the Nazis advance across France with an unearthly wave of malaise and darkness riding before them, it seems nothing can stop the German advance. Professor Evans, his brother held prisoner in Berlin for his occult expertise, has a personal stake in things and when the men from the Ministry ask him to once again serve his country, he agrees. Together with his assistant June, photographer Tom Danvers and a new recruit in the from of RAF Captain Roger Ffolkes, Evans and his team find themselves fighting their old eldritch enemies and their latest ally, Der Fuhrer himself.

star wolves (science-fiction)

Life on the Greywolf was simple before the Vode invaded - back then it was just a matter of cargo runs and skirmishes with the Gatespace Pirates. But now things are different. Coopted by the Worlds Brigade, Commander T'Lin's crew now fly under a letter of marque as privateers, alongside the pirates they once fought so hard to eradicate, in a battle to the death with the inhuman aliens. Unknown to T'Lin, her science chief Lars harbors a secret desire to make contact with the Vode, while shuttle pilot Tran Mar bides his time waiting for a chance to strike at the pirates who killed his mother and cyborg Makaar longs to regain his humanity with the aid of Vode biotechnology...

domino effect (modern)

Team Seven are the U.N.'s best covert operations unit, an elite squad sent in to topple dictators and rescue hostages from the toughest locales; but when the secret terrorist force known only as IOTA cuts off their contact with home and leaves them stranded unarmed in war-torn Eastern Europe, they have no choice but to ally with the local rebels to survive - and they soon discover IOTA's plans to ignite a brushfire war across the entire continent. Former SEAL Major Jack Mackenzie must balance his feelings for his second-in-command, Captain Tamara Scott, with his mission to find IOTA's headquarters, while ex-SAS trooper Sergeant Colin Roper tries desperately to return his double-agent sister Amanda from IOTA'S clutches.

War Zones

War's Lasting Effects
War Party
Art of Wargames
Art of Wargames Options