The phrase "to recall all units" means to call back or bring back all the individuals or groups of people or things that were previously sent out or deployed. Full definition
The United Nations Mission in South Sudan has recalled a unit of police officers from Wau and confined them to base after a preliminary investigation into allegations of sexual exploitation. (ghanapoliticsonline.com)
NVIDIA introduced SHIELD tablet last year starting at $ 299, but it went out of stock on NVIDIA «s website shortly after the company recalled some units in late July this year for posing a fire hazard due to overheating batteries. (fonearena.com)
Recalled units contain these production date codes but do not have a green dot under the windscreen of the microphone. (tbrecall.com)