Considering a Cadre Augmented Army - RAND Corporation

-254- An Operational Analysis of Cadre
C.2—CALCULATING IRR OFFICER/NCO AVAILABILITY
Another cadre force structure, analyzed in Chapter Two, designed cadre units under
the assumption that officers and NCOs would be activated from the Individual Ready
Reserve to fill senior positions in cadre units. This section describes how we calculated the
number of IRR personnel that would be available in wartime to fill positions in cadre units.
We began the analysis by extracting the number of personnel in the IRR by grade
from DoD (2005). 180 This document only breaks down the structure of the IRR by grade for
the entire IRR (Army, Air Force, Navy) so we used data on the size of the Army IRR relative
to the total IRR to calculate the number of personnel in each grade in the Army IRR. 181 We
found that Army personnel comprised 41 percent of the total IRR. Therefore, we multiplied
the number of IRR personnel in each grade by 41 percent to obtain the number of Army
IRR personnel in each grade. This assumes the grade structure of the Army IRR is the same
as that of the IRR as a whole.
Next, we calculated the percentage of personnel in each grade that would be
available for BCTs (some personnel would be available only for CS/CSS/EAD units or
institutional army assignments [TDA units]). We began by calculating the percentage of
personnel in the Army assigned to BCTs in each grade. To do this, we multiplied the
number of personnel in each grade for a single BCT by 42 BCTs (the number of BCTs
planned for FY2009). 182 Then, we divided the total number of personnel in each grade of the
____________
180 DoD (2005), p. 171
181 DoD (2005), p. 161
182 Department of the Army (2007b), p. 44