Quickstep

In David McCullough’s “I Love Washington” (April/May issue), the author says that Truman “in Woodrow Wilson’s war … learned a military pace of 120 Steps a minute.” Please note that for many years the cadence was 128 and was only changed from 128 to 120 in about 1940 when Infantry Drill Regulations , Field Manual 22–5, was changed and simplified.