Mike Tindall has joked about how being a father-of-three helped him prepare for a day of army training. The video sees the former rugby champ turned royal, 44, join army personnel for a day to experience first-hand the challenges they face when training in Ministry Of Defence (MOD) areas that are also open to the public.The video began with Mike taking a stroll in Salisbury Plain, which is used for training by the MOD but it also accessible to the general public. Mike began: "Hi, I'm Mike Tindall, former England rugby captain.