The ornamental design for a militarycap with ornamentalinsert, as shown and described.
FIG. 1 is an exploded perspective view of a military cap with ornamental insert showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a side elevation view thereof.
The dashed lines represent environmental structure that forms no part of the claimed design. The dash-dot-dot-dash lines with arrowheads, illustrating that the octagonal structure inserts into the cap, form no part of the claimed design.