Yeah, sure. Just like Dutch, French, Danish, Czech and Norwegian SS divisions. All Hitler's allies. All on his side. Right ? Jeez, in '44 the Waffen-SS divisions would have taken a one-legged jewish communist from the Philipines if he'd volunteered. From an estonian perspective, the enemy of my enemy is my friend and that would probably have been the Nazis, but I don't think that Adolf himself would have considered anything east of Prussia worth being an "ally". He was a frothing madman, he had slaves, not allies.
Estonians [...] were allies of Hitler. Formed few SS divisions from estonians. Fought on Hitler side.