 It was around this time that both Bhimsen Thapa and his father Amar Singh Thapa (sanu) were promoted from subedar to the rank of sardar, and Bhimsen began to serve as the ex-King's chief bodyguard.However, Rana Bahadur's renunciation lasted only a few months.After the inevitable death of Kantavati, Rana Bahadur suffered a mental breakdown during which he lashed out by desecrating temples and cruelly punishing the attendant physicians and astrologers.