"On the Side of...The Evil Inhumans!"
The Hulk was about to retaliate against Maximus and his band of evil Inhumans, but the arrival of the US Army gives Maximus the chance to ask Hulk which he hates more, the Inhumans or the Army? The Hulk turns his attention to Thunderbolt Ross and his men, and ends the Army's threat. Maximus betrays the Hulk's trust, and the Hulk must fight to save Ross, Betty, and the Army forces from Maximus' giant robot. The Inhumans flee, and the Army turns to capture the Hulk, disregarding his valiant rescue (20 pages).
Reprinted (partially) in Marvel Super-Heroes (1967) #73.