1)
Goddess Elizabeth (+ AA assistance) vs Indura Monspiet + Indura Derriere
It was really the first moment Elizabeth had for herself to shine properly in battle since the series began. Given how Elizabeth had attempted numerous times to stop the war and battles from progressing further, seeing her make a pretty bold conviction (''I will save them'') despite everyone around her being either neutral or against such an act of salvation just showcased how much of a strong spirit and character Elizabeth has. All of the Four Archangels present at the battlefield questioned her actions and despite struggling against the tug of war with the Indura, she was still able to make such a iconic and powerful speech about equality which encompassed her entire character in one chapter. This moment is only strengthened by the fact that we later find out that her mother, the Supreme Deity, punished her for this action and given how Ludoshel directly warned her in the moment that her act of salvation would result in punishment, did not waver her conviction to save her enemies. Not only did she risk her own life in the moment to purify the Indura, but she also sacrificed her entire future, given how her mother cursed her for this act of authority.
Additionally, adding the fact that it was a spectacular moment to witness and read, given how we saw multiple wings of light appear, light itself illuminate the battlefield and see this ''tug of war'' between Elizabeth and the Indura happen, it's easily my favourite fight and moment in the entire manga, given it illustrates the full extent of Elizabeth's power and how deep her character can be.
2) Elizabeth + Meliodas vs Supreme Deity + Demon King
I don't even know if you can call this a fight given how it was extremely one-sided, but at the same time it's extremely remember able and enjoyable since it first depicts the awesome designs of both Gods (which I absolutely adore) whilst spiting a new look to our main characters. Mainly, Elizabeth isn't sporting her usual peaceful personality in this battle, she looks extremely pissed and ready to kill her mother from just the look on her face and Meliodas is also sporting the same look. Furthermore, this fight demonstrates just how mad the Gods are at there children that they find it perfectly acceptable to make a temporary truce in the middle of a war, just to hunt down Elizabeth & Meliodas and punish them appropriately.
I remember wondering how the Goddesses ended up sealing the Demons instead of outright winning given the status of this powerful duo, but then I saw how easily fodderized they were by their parents and was strangely pleased
3) Four Archangels vs Ten Commandments
An outright war between these two oppositions was extremely enjoyable to read, especially given it was the first time in the series seeing Goddesses use their powers and do battle. I felt it was quite balanced as well, given how both sides did struggle and earn small wins (despite the AA's not going all out) with the conclusion drawn out by Elizabeth's encounter with the Indura.
4) Diane vs Helbram
It was the moment that made me extremely attracted to Diane's character and abilities, since she extremely trashed Helbram after he had the audacity to underestimate a member of the seven deadly sins with a sacred treasure in hand (which was huge back then). I felt like this is still Diane's best moment in battle since the series has began sadly..
5) Everyone vs Ash-Grey Hendrickson
I think seeing everyone battle together against Hendrickson was one of my favourite battles in the Kingdom arc, given how it's everyone showcasing their abilities and coming together in order to defeat a common enemy. This fight was only made better when Elizabeth's powers fully awakened and allowed her to heal the entire capital whilst pushing back Hendrickson
