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I think a lot of the problems with the delay order (and why no one uses it?), is because when a unit with a delay order takes casualties, (a trigger fires in the code that tells them they should pull back to the next position?), and they decide to pull back, they are unable to do so because the retreat recovery has kicked in, due to the casualties, and they get frozen to the spot until they are overrun.
There should be a much lower threshold for their willingness to move, when they have pre planned orders to pull back, as in a withdraw and delay order. Maybe even do away with the retreat recover all together, for withdraw and delay once the orders delay is over?...
The delay experience always disappoints me because it doesn't track with my readings and with my experience commanding infantry troops in actual US Army field exercises. Generally a delay would turn out like this
1. Superior orders a formation to conduct a delay at one or more locations or between the enemy and some geo feature.
a. the superior may order the formation to defend till the last for a maximum possible delay
b. the superior may order the delay till a certain time or for a duration from first contact
c. The superior may order the delay to merely compel the attacker to deploy from line of march and then withdraw (to preserve the formation)
d. the superior may order the delay to be carried out till certain conditions occur (for instance friendly forces cross a bridge or finish a road march)
e. the superior may require requests to withdraw be made to the superior before they be accomplished.
2. Then the formation commander may order his subordinate elements to conduct any type of mission to achieve the delay order. The orders to any of the subordinate formations could be to:
a. attack
b. defend
c. delay
d. movement to contact
e. ambush
f. a combination and/or series executed at discretion elements leader, on-order, or by request.
Some examples come to mind:
1. Interviewed some years ago a retired LtC who was a company commander in 1st bn 109 Infantry regiment. The Bn was in reserve vicinity Diekirch. Late on the 16th his company was ordered into a blocking position. Soon after the only comm he has was with regiment HQ. Over the course of several days he was ordered from one position to another. 109th was conducting a delay. He never had authority to withdraw. BTW he started out under strength at about 125 men. After five days or so he was back down to Huertgen Forest strength of under 30. Never once he said did the Germans try to overrun his unit. The German formations encountered his positions, exchanged fire and went around.
2. LTG Desobry reported in an oral history he gave
http://usahec.contentdm.oclc.org/cdm/singleitem/collection/p16635coll26/id/106 that he requested to withdraw from Noville and 101st HQ denied the request. His mission was a delay.
3. CCR 9 AD was given a delay order. Once contact was made VIII Corps refused to give permission to withdraw from the Team positions.
I don't have time to dig out other delays from history. What throws me off with the delay order is i can't give the order in the fashion described. Instead the delay order is a crap shoot which may buy some time but most often has the delay force racing away prematurely for unrecognizable reasons without having requested permission to withdraw and often suffering high casualties. (in other words delays seem always to be conducted by raw conscripts.)
I'd like us to seek out and publicly recognize the master of the delay order (whoever that might be), heap accolades and victory laurels on him, and force him to produce tutorials on the use of the delay order.