The phrase "placed under command" is correct and can be used in written English.
It is usually used to describe when someone has been assigned to a certain command or rank within an organization. For example: "The new recruit was placed under command of the battalion's lieutenant colonel."
An additional eight were placed under command of Finck.
It was placed under command of Captain Jesse Tidwell and executive officer Captain Bob Channon.
It was initially placed under command of the MLC when the transition began: the current situation is uncertain.
Warning orders for deployment to Egypt were cancelled and the New Zealanders were placed under command of XII Corps, taking up defensive positions in the Folkstone Dover region.
As the size of the American Expeditionary Force grew, the division was placed under command of I U.S. Corps in July.
When the Aisne-Marne campaign began shortly thereafter, the division, under I U.S. Corps was placed under command of the French Sixth Army protecting its east flank.
In April 1943, the 1st SAS was reorganised into the Special Raiding Squadron under Mayne's command and the Special Boat Squadron was placed under the command of George Jellicoe.
By levying ships from the Aegean states under his control, Agesilaus had raised a force of 120 triremes, which he placed under the command of his brother-in-law Peisander, who had never held a command of this nature before.
On 16 August, Oberstleutnant (Lieutenant Colonel) Mück replaced Windisch as commander of the 383rd Regiment, and the division was placed under the command of the 2nd Panzer Army, which had been redeployed to the Balkans from the Eastern Front.
The Eighth Air Army and Twenty-first Army were also placed under his command.
The putative raider was then placed under the command of Confederate officers.
