Federation-Klingon War (alternate timeline)

Second Federation-Klingon War
A Galaxy-class starship fires on a Klingon bird-of-prey
Date:	2400-2403 (alternate timeline)
Location:	Alpha Quadrant
Result:	Surrender Federation and Starfleet destroyed Earth bombarded from orbit by Klingon warships destroying all inhabited areas and the planet's ecosphere
Belligerents
United Federation of Planets Third Republic of Bajor Andorian Empire	Klingon Empire
Notable commanders
Brigadier General Samantha Carter Vice Admiral Typhuss J. Kira Admiral Kira Nerys	Chancellor Martok
Strength
Thousands of starships and ground forces (MACOs, Starfleet Marines) Bajoran Militia	Thousands of warships and ground forces
Casualties and Losses
Forty billion, many Starfleet starships	Heavy Klingon losses, many warships
[ Source ]

In an alternate timeline, the Second Federation-Klingon War (2400-2403) was a major conflict between the Klingon Empire and the United Federation of Planets that took place in the mid-25th century following the deterioration of relations between the two powers. (Star Trek: Bajor)

The Third Republic of Bajor and the Andorian Empire came to the aid of the Federation during the war. (Star Trek: Bajor episode: "The Aftermath")

Origins and overview

The alternate timeline in which the war was fought had been created when the Federation lost the war to the Xindi in 2385, following the deterioration of relations between the Federation and the Klingon Empire, this incident ignited the war, which endured for the next three years.

By 2400, the war was going very badly for the Federation, far worse than most individuals knew. Forty billion lives had already been lost and Starfleet Command believed that defeat, with no choice but to surrender, was inevitable within three years. Although the Federation had emerged victorious in several battles, including one at Archer IV in 2401, the Battle of the Phoenix in 2402 and one at P4X-351 in 2403, Starfleet had lost over half the fleet, and all vessels were being pressed into service, regardless of age. However, the situation was such that the addition of a singular ship would make no considerable difference to the Federation's ongoing war effort.

For the Federation, the conflict also resulted in rationing of food due to concentrating power on defensive systems, and considerable advancement of deflector shield technology which increased the endurance of ships when in battle.

Major battles

• Battle of Archer IV (2401)
• Battle of the Phoenix (2402)
• Battle of P4X-351 (2403)

Federation-Klingon Wars
	Federation-Klingon Cold War (23rd century-2293) • Four Years War (2250s) Federation-Klingon War of 2256-57 (2256-57) • Federation-Klingon War of 2267 (2267) • Federation-Klingon War of 2269 (2269) • Federation-Klingon War of 2285 (2285) • Federation-Klingon War of (2289-2290) (2289-2290) • Federation-Klingon War of 2372-2373 (2372-2373) • Federation-Klingon War of 2405-2410 (2405-2410) • Federation Klingon War (alternate timeline) (2344-2366) • Federation-Klingon War (alternate timeline) (2400-2403)