So when the Marines were sent to Vietnam no one told them to not bring tanks.
They brought the M103 Heavy Tank the US Army decided not to use anymore.
So along with M48s, M60s, M88, M113A1, the M108/109 SPA and M107/M110 SPA the M103 would be a pretty cool tank to build.
And speaking of the M107 howitzer who wouldn't like to have a 175mm howitzer on call for artillery support.
The hull is also useful for the M578 light recovery vehicle.
