Army vehicles unknown origin???
 

My son received these from his grandfather around 2005. They were well taken care until daughter had grandson and is now 4 yrs old. He's been messing them up but he loves them. I do not recall what brand these were and there are barely any identifying markings.
Pic 1: Truck & Trailer - 29" long (no ID markings, Made In China on belly)
Pic 2: Truck Cab - 5" tall x 9" long (doors swing open, position for turret on cab top)
Pic 3: Helicopter - 4" tall x 10" long (no ID markings)
Pic 4: Tank- 3" tall x 8.5" long ("2263FM" and Made In China on belly)
**Had red rocket projectiles for spingloaded barrell.
Pic 5: Wheeled tank/APC - 3.5" x 7" ("1983FM" on belly)
**Had red rocket projectile for front center of turret.
Several flags and small mounted guns missing.
Scoured online images and ebay for pictures of these but no luck. I'm sure they are not high end toys but they are very good quality castings of rigid plastic with good detail.
Any help is appreciated!

These could be the Toysrus True Heroes line theory Walmart private label line. Walmart still brings some of these in occasionally.

From what little I can find, it was released under the CHAD VALLEY label