who were fighting the war where the qf 4 . 5-inch mk i – v naval gun was used ?
SELECT DISTINCT COUNT attr_open var_uri attr_close where brack_open dbr_QF_4.5-inch_Mk_I_–_V_naval_gun dbo_usedInWar var_x sep_dot var_x dbo_territory var_uri sep_dot var_x a dbo_MilitaryConflict brack_close