story identification - Scifi book from the 80's. The last of a warrior race

The Last Legionary series by Douglas hill

The protagonist is the last of a warrior race, all the others were killed by a radiation weapon and he has a small flying telepathic alien as his companion.
The first 4 books below are the overall story arc where he is the last of his people and meets the telepathic alien, the 5th book is a prequel.

1. Galactic Warlord (1979)




2. Deathwing over Veynaa (1980)




3. Day of the Starwind (1980)




4. Planet of the Warlord (1981)




5. Young Legionary (1982)