Inspired by the 'Build your own Air Force' thread.
An unspecified Eastern European country awards you 12 billion dollars to build their army from the ground up.
Rules:
1. We're in a magical world where nukes don't exist. Plan accordingly.
2. No aircraft, just helicopters and drones. Assume the Air Force is reliable.
3. For the sake of easy math, the cost of fully training and equipping a soldier is 15,000 USD including specialized training and all equipment except rifles and sidearms. Special Forces are 30,000.
4. For some reason, every country on earth is willing to sell you equipment. Have fun.
I'll start.
T-72B3M/B4 Main Battle Tank times 2,000 = 5.4 billion, 6.6 billion left.
Sikorsky S-70i Black Hawk times 100 = 500 million, 6.1 billion left.
300,000 troops = 4.5 billion, 1.6 billion left.
500,000 VEPR 12 gauge with 30 round magazine, because if your troopers aren't man enough to shoot it they don't belong in your army. = 500 million, 1.1 billion left.
500,000 Smith & Wesson M&P 40. M2.0 = 300 million, 800 million left.
3,000 Special Forces operators = 90 million, 710 million left.
With the remaining 700 mil, 700,000 more VEPR-12 gauge semiauto shotguns.