[Milsurplus] Jerry Cans (?)

[C.Whitaker]

de WB2CPN
You milsurplus people may know, but I have
a small question.
 From WWII Jeeps and 6X6's I remember 5 gallon
cans for gasoline which attached to the outside of
the vehicle.
I definitely remember two models of those "Jerry"
cans.  One model had a large screw lid, with a small
chain retainer.  Most cans were colored OD.  There
was an accessory spout that used a rubber seal, but
these did not come with the can.
The other model had a small opening, and used a
small rectangular hinged cover.  These cans were
usually Tan or Sand.  Were both models ours?
I thought they were both five gallon cans.
Anyone know about these?
Clete