>>64150422 (OP)
As real life isn't a video game with stat effects it would entirely depend on the charisma of the respective priest.
There were however banner wagons (there were also examples where the key to the city was exhibited) which served as mobile symbols of prestige for their respective side and also as easily visable rallying points. Sometimes they were acompanied by priests.
There is also the case of Walter Dodde, who was a lay cistercian, who held a rousing speach to rally a contingent of peasants and urban militia during the Battle of Worringen in 1288.
>>64150464
Martin Luther and Pope Julius II. never met. In fact Julius II. was dead for four years when Luther publicised his 95 Theses in 1517. Luther did criticized Julius II. briefly in one text of 1520 - but more so as a symbol of the of the ever secularising, warmongering and wasteful papacy of the 16th century. Something that Luther really disliked as he belonged to the order of of Saint Augustine, which subscriped to the commandment of poverty.
>>64151036
>mace
There is no church law that mandates maces or other blunt weapons as weapons for ecclesiastical men. It seems that this whole trope is based on Odo of Bayeux, who is depicted on the bayeux tapestry wielding a club.