Military numbers from:

Wells, T. S., Miller, S. C., Adler, A. B., Engel, C. C., Smith, T. C., & Fairbank, J. A. (2011). Mental health impact of the Iraq and Afghanistan conflicts: a review of US research, service provision, and programmatic responses. International review of psychiatry, 23(2), 144-152.

Gahm, G. A., Lucenko, B. A., Retzlaff, P., & Fukuda, S. (2007). Relative impact of adverse events and screened symptoms of posttraumatic stress disorder and depression among active duty soldiers seeking mental health care. Journal of clinical psychology, 63(3), 199-211.

Paramilitary numbers from:

Bayer, C. P., Klasen, F., & Adam, H. (2007). Association of trauma and PTSD symptoms with openness to reconciliation and feelings of revenge among former Ugandan and Congolese child soldiers. JAMA, 298(5), 555-559.

Betancourt, T. S., Borisova, I. I., De la Soudiere, M., & Williamson, J. (2011). Sierra Leone's child soldiers: War exposures and mental health problems by gender. Journal of Adolescent Health, 49(1), 21-28.

Ovuga, E., Oyok, T. O., & Moro, E. B. (2008). Post traumatic stress disorder among former child soldiers attending a rehabilitative service and primary school education in northern Uganda. African health sciences, 8(3), 136-141.