Help understanding the flow of combat resolution.

Anyone who wouldn't mind helping me understand combat resolution better it would be most appreciated.
If I have any mistakes please correct me.

1 vs 1 
Declare and resolve

Attacker

* Choose weapon(s)
* Declare target

Target 1

Attacker
Roll to strike

Defender
* Anti-Missile/Dodge
* RWI
* Damage
* Remove casualty

*****


1 vs 2 
Declare all and resolve combat steps separate

Attacker  

* Choose weapons  
* Declare all targets

Target 1 (Not simultaneous with Target 2) (In any order)

Attacker
* Roll to strike

Defender 1
* Anti-Missile/Dodge
* RWI
* Damage
* Remove casualty

Target 2 (Not simultaneous with Target 1)

Attacker
* Roll to strike

Defender 2
* Anti-Missile/Dodge
* RWI
* Damage
* Remove casualty

*****


1 vs 3 Formation 
Declare all and resolve combat steps together

Attacker
* Choose all weapons
* Declare all targets

Target 1 (Simultaneous with Target 2 and Target 3)

Attacker
* Roll to strike

Defender 1 and Defender 2 and Defender 3
* Anti-Missile/Dodge
* Shield/RWI
* Damage


Defender
* Remove casualty(s)