a troop formation for drill or basic combat training, the intervals between the individuals being greater than those in close order.
Origin of open order
First recorded in 1615–25
Also called extended order.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for open order
Behind them, however, in an open-order skirmish-line, came fifty-odd with weapons.Naudsonce|H. Beam Piper
British Dictionary definitions for open order
military a formation that allows additional space between the ranks of a guard or inspected unit to allow the inspecting officer to pass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012