From
AFPRB 2013 para 2.11
Harmony Guidelines are set to ensure balance between competing aspects of the lives of Service personnel: operations; time recuperating after operational tours; personal and professional development; unit formation training; and time with families. Each Service has different criteria for Harmony Guidelines (1), reflecting different operational requirements and practices. The guidelines are: separation levels of about 60 per cent for the Naval Service; 45 per cent for the Army; and 38 per cent for the RAF. Any personnel exceeding these limits across a rolling period will have breached these guidelines. Quarterly figures show that the levels of breaches have been fairly constant over the past two years within each Service at about one per cent for the Naval Service, almost three per cent for the RAF and just over five per cent for the Army. However, these figures mask higher individual levels of harmony breaches in specific trades and ranks.
Note 1 - Royal Navy – In any 36 month period, no one to exceed 660 days of separated service; Army – Over a rolling 30 month period no one to exceed 415 days of separated service; RAF – not to experience separated service in excess of 280 days (all codes) in any 24 month period.