The movement
| of troops from lines
| or sectors held by them
| to other positions deeper within their territory
| in order
| to form new force groupings for subsequent operations
| It may
| be planned
| or forced Whatever the situation
| a withdrawal is carried out only
| on the order
| or with the authority
| of the senior commander
| or officer
| in charge The direction chosen
| must offer the most favourable conditions for the withdrawal
| of the main body and its concentration
| on the final
| or designated line