From: Florida, USA
Any infantry can panic, and any non-tank vehicle can panic, at the sight of a tank. Period.
Now, those armed with anti-armor weapons will usually not panic AND flee at the sight of a tank. Anti-armor weapons include:
Bazookas, Satchel Charges, Flamethrowers, .50-cal HMG's, anti-tank rifles.
Anti-Armor weapons do NOT include:
SMG's, Rifles, LMG's, MMG's, and HMG's without AP rounds; hand grenades (NOR rifle-grenades--they don't count!); sniper rifles; 4.5 inch rockets (!!).
Simply having armor does not cause one to be a tank. I have seen 1949 US Prime Movers with nice armor and a Ma Deuce (.50 HMG) panic at the sight of a tank. As the manual states, though, having friendly armor nearby reduces or eliminates the risk of Tiger Terror... even if it's a Japanese tank. ;)
Crewmen will abandon artillery pieces if they are Panzer-Panicked.
Engineers and other units armed with anti-armor weapons were interesting. I had an FT Engineer unit with an FT and a Satchel Charge panic three times in one round. It did not flee until AFTER the round, when auto-rally and retreats are determined. Same for some Rangers.
I also had an M9 Bazooka team--15 for Experience, Morale, Rally, and all command ratings--stand their ground and destroy a Konigstiger with one hit!!!!!!!! A US Rifle Squad with Garand, BAR, and Grenades also didn't flee, but was pinned. So not only can anyone flee, but anyone can stand their ground and kill you too.
Hope this helps...