Gleaned from a history web site:

"On September 1st., 1939, 1.8 million German troops invaded Poland on three fronts; East Prussia in the north, Germany in the west and Slovakia in the south. They had 2600 tanks against the Polish 180, and over 2000 aircraft against the Polish 420. Their "Blitzkrieg" tactics, coupled with their bombing of defenceless towns and refugees, had never been seen before and, at first, caught the Poles off-guard. By September 14th. Warsaw was surrounded. At this stage the poles reacted, holding off the Germans at Kutno and regrouping behind the Wisla (Vistula) and Bzura rivers. Although Britain and France declared war on September 3rd. the Poles received no help - yet it had been agreed that the Poles should fight a defensive campaign for only 2 weeks during which time the Allies could get their forces together and attack from the west."

Now, 1.8 million German troops, 2600 tanks, and 2000 aircraft, all launched in a blitzkrieg against one country sounds like a pretty substantial war machine to me. Perhaps not by modern standards, but. . . .

At that time, could any other country mount an assault like that?

If Germany did not have the biggest, then it most certainly did have the deadliest and most aggressive war machine, and headed by a man whose goal was no less than conquest of the entire globe (that I can substantiate quite easily if you insist).

For a little refresher, you might take a look at THIS.

So once again I say, don't get too smug. When it comes to dishing crap, you are definitely in the lead.   

Don Firth