The U.S. military began expanded combat training of Ukrainian forces in Germany Sunday — with some 500 soldiers set to participate in the "combined arms" program over the next weeks before returning to Ukraine, per AP.Driving the news: Gen. Mark Milley, chair of the Joint Chiefs of Staff, told two reporters traveling with him to Europe that the large-scale training in addition to a raft of new weaponry for Ukraine would be crucial in Ukrainian forces' push to regain territory seized by Russia's military, as the invasion nears its 11th month, AP reports.- Milley was due to visit on Monday Germany's Grafenwoehr training facility to examine the program — which U.S. officials announced plans for last month, along with a pledge to provide Ukraine with a Patriot missile defense battery.By the numbers: The U.S. is among over 30 countries to have provided Ukraine with weapons and other military equipment since Russian forces first invaded the country on Feb. 24.- Milley told the Washington Post Sunday it'd "take a bit of time" to get the Ukrainian troops combat-ready with the tanks, artillery, combat vehicles and other weaponry — "five, six, seven, eight weeks, who knows.""