As for his martial exploits...
As for his martial exploits, he did not participate in the Battle of Badr because his maternal uncle, Abu Jahl had come to fight against the Holy Prophet (S); so how could he participate in the battle against his uncle? Secondly, he fled from the battlefield in Uhud to save his life, leaving the Holy Prophet (S) wounded.
In his own words: ‘I was scampering away like a mountain goat.’ Besides, he refused to confront Amr Ibn Abde Wudd in the Battle of Khandaq and in the Battle of Khaybar, he hid himself from Marhab and Harith for two days and did the same in the Battle of Hunayn. We cannot find any evidence in Quran, traditions and History that Umar or Abu Bakr ever caused an injury to anyone or were ever injured in a battlefield. Whenever such a time arrived they used to flee from there.
When this is the reality, why has Qadi Sulaiman Patyalvi praised Umar’s bravery? The truth is that Umar was not brave or courageous at all, but it was all a result of his obstinacy. If Umar had courage, he would not have beaten a lady. The greatest sin committed by him was the severe blow to Lady Fatima (s.a.) that caused miscarriage. After that, Fatima fell ill and finally passed away. It is clear that a brave man can never stoop so low.
To beat a woman is an act of cowardice and to behave mercilessly with the Lady of Paradise? Leave alone Muslims, even infidels cannot commit such an ugly deed. We should know that Umar had no courage at all, but he was a very bad tempered man and Ahlul Sunnat believe that Umar was very brave and courageous because of his hot temper. Brave people cannot be a hot tempered. They are always kind and merciful, but Umar was not concerned with kindness and mercy.
He behaved harshly with everyone, whether he was a Muslim or infidel. An example of his real temperament is that when the prisoners of Badr were brought to Medina, he advised the Prophet to kill them all in such a way that each Muslim soldier would kill his relative by his own hands. The Prophet turned away his face from this advice and did whatever he felt appropriate. If the Prophet had acted according to Umar’s ugly opinion, people would have blamed Islam.
It is clear that Umar’s opinion shows hot temperament. What a shame that Umar did not do anything during the actual battle; but when prisoners were brought to Medina, he roamed the city with his sword. This was not an act of bravery.