Figure 3. Levels of Operation.
Attack of position also has a protracted period column. The protracted period refers to days 6
through 15. The fifth-day requirement may be established by taking the average of the succeeding-
days rate and the protracted period rate.
To use Appendix D, Table 2-19 for estimating ammunition expenditures for combat situations not
stated in the table, use the multipliers given below:
Attack of position (permanent fortification): 100 percent of attack of position (deliberately
Attack of position (hastily organized): 100 percent of attack of position (deliberately organized).
Covering force: 100 percent of defense of position.
Inactive situation: 80 percent of protracted period.
Meeting engagement: 200 percent of protracted period.
Pursuit: 40 percent of protracted period.
Retrograde: 59 percent of defense of position (succeeding-days rate).
Assault of hostile shore: 100 percent of defense of position (succeeding-days rate).
For estimating ammunition requirements for periods greater than 15 days, use rates provided in SB
Essential elements of information for RSR computation are as follows:
Weapons density and troop strength of designated forces.
Time period RSR is to be established.
Type of ammunition.
Mission of the designated forces.
Level of operation.
Here is an example of how to compute the RSR.
The Situation: Using Appendixes A, B, and D, determine what a 45 day period would be for
TOE 87000J440 for LIN M68282, 4.2-inch mortar when the division will be in an inactive
situation for the first 24 days, then be deployed in an attack of position for 21 days. During
the inactive situation, the level of operation will be light. Approximately 75 percent of the fire
support elements will be committed to the attack. The unit is in USARPAC.
The correct amount is figured like this:
Step 1. Weapons density = 66.