type .dt f180vhh000
You can skip the number at the end.
If there are several VHs on a field, system will tell you which ones are down.
For quick reference, the most important targets
town: twn
auto ack (field/town): gng
FH: fth
BH: bhh
VH: vhh
ords: amb
barracks: bab
radar: rdr
SB: bab
ship: shp (Cv is invariably ship #000)
flag: flg (if a time is given, the flag is white)