"Im more positive that this isnt White Phosphorus but instead it may be therite. Thermite has a more red orange color and WP is White which this isnt"

No thermite. As I previously wrote: "It was a Swedish BILL missile (shaped charge, not phosphorous) against an old Centurion. The tank was was obviously not manned during the test, but it was filled with a standard load of fuel and ammo. BILL 1 was starting to be replaced by BILL 2 in 1999 in the Swedish army."

What is seen after the hit is the ammo in the tank going off.