I remember this one guy posted about each mammoth requiring a small army to support it. Something about three mammoths each with several med tanks and such...he must have forgotten about the vech limit.The only support mammoth needs is something to take out the little infantry; in numbers flame rush is futile. Engineers are definite must; if there are no engineers on the team, don't even try buying the mammoth. Being stranded on enemy turf without engy support doesn't appeal to anyone; mammoth cannot retreat and defend itself adequately from multiple attackers.
Mammoths+snipers+engineers=victory in pubs