surround a bullfrog tank with lots of infantry (i tried around 50), group those infantry(so you can select it faster)...order some infantry to ride the bullfrog then use its ability (the human cannon transport) then select all the infantry outside of the bullfrog and order them to ride the bullfrog continously(you must act fast)...you can see that the bullfrog will never get tired of shooting all of them (as long as you order those infantry to ride it very very fast)
-create tons of spies...and a tanya *wink...let your enemy be surprised with your tons of TANYA!!!
-dolphin can jump, and this move can see those buildings/unit on the higher places...
-put some spies on those IFVs and multi gunner turret...and you have great britain's sniper!!!