The list of gear the US sent to Ukraine...

Just since Feb 24th — when Putin launched his unprovoked and unjustified invasion of Ukraine — the U.S. has committed over $1.7b in security assistance to Ukraine. We will continue to work around the clock to fulfill Ukraine’s priority security assistance requests. pic.twitter.com/PQ8R3mkOw7

— Secretary of Defense Lloyd J. Austin III (@SecDef) April 7, 2022

I personally believe the biggest mistake Russia made was in underestimating the response of the US (probably a few European nations too) to their invasion.

I'm looking at this list and my guess is the counter artillery systems were probably at LEAST as important IF NOT MORE important than the anti-tank missiles.

Secure communication probably ranks high too.  Sat imagery?  They're saying commercial but I CAN TELL by the way Ukraine was able to target high value sites that they had better than that.

Also note that this is the unclassified assistance. 

I'm betting the classified shit was even more robust and even more helpful in this fight.