The top civilian positions in both the Navy and the Army remain unfilled under the Trump administration as the Senate heads into its final weeks before its summer recess.

President Trump's pick for Navy secretary, Richard V. Spencer, has already been sent to the chamber, but so far the White House has announced no Army nominee to replace Mark Green, who withdrew from consideration in May amid controversy over comments about gay marriage, transgender rights and Islam.

The nomination of Spencer, the financier and former Marine aviator, was set for a committee hearing in June but was postponed due to Senate work on repealing and replacing Obamacare, according to an Armed Services aide.

The Senate Armed Services Committee is now likely to consider Spencer before lawmakers leave Washington at the end of the month for a break that lasts until September.

If approved, Spencer would fill a crucial position and help the administration put its stamp on Navy policy and communicate its message to Congress.

The Senate Armed Services Committee just wrapped its work on the National Defense Authorization Act. The bill must still be approved on the Senate floor and sees Trump Pentagon nominations as a top priority, the aide said.

The committee on Friday also received the nomination of Matt Donovan, an Armed Services professional staff member, to be Air Force undersecretary.

But the Army secretary position remains uncertain as the summer legislative calendar winds down.

Senators will have just three weeks to consider Trump nominees when they return July 10, and the logistics of scheduling a committee hearing and final Senate vote on a new Army nominee will become increasingly difficult.

The chamber's current calendar calls for lawmakers to wrap up work on July 28.

Green's nomination never made it to the Senate. He dropped out as liberal advocacy groups blasted his political positions as a Tennessee state senator and devout Christian and it became increasingly clear Democrats would also put up strong opposition.