The main character was a war veteran who had lost an arm and used a sword to strengthen his other arm. He is caught in a time probe from the far future and dragged forward. This future has already had WWIII and a couple of telepath wars. I think there were three books, but it may have been four.
It could be "With Fate Conspire" by Mike Shupp, its the first book of the "Destiny Makers" series. There's 5 books in total, its been a long time since I read them but what youve described sounds familiar.
- With Fate Conspire (1985)
- Morning of Creation (1986)
- Soldier of Another Fortune (1988)
- Death's Gray Land (1991)
- The Last Reckoning (1991)