story identification - Identify book: Older generation of reptile warriors are awakened from stasis to fight next war until newer generation arrives

Is it The Bug Wars by Robert Asprin?

The protagonist is awakened to fight once more in a long war of reptiles vs a coalition of insect enemies. He and his team are stranded on an enemy planet during an attack. Later on the protagonist gets promoted to the point where he's a general planning the final assault on the Ants, the smartest enemy race.