Time for the civil war in Equestia.
Battle for Equestia
Princess Celestia had placed her forces far and wide through out Equestia,the guards had garriosoned every military base and there were regular patrols.
Shining armour in paticular was responsible for the main gate into Equestria,known as checkpoint charlie,his own force of six thousand guards was a powerful,united battalion of the 15th Divsions finest.
While most of the citizens stayed in thier homes and waited for it to blow over,Rarity and her friends were exacuated to Canterlot,in the hope that Silver sabre would not attack his own sister,Celestias propaganda had recruited more and more and soon the guards ranks filled with new recruits.
However,when Silver sabres forces smashed through checkpoint charlie with a massive ariel assualt,they kept slicing through Shining armours battalion until there was nothing left. But no ponies were killed,on the UAE commanders orders that they would not kill any."This was a war to remove Celestia from power and by force until they could trial her for treason".He said.
The princesses armies began to rout and run for Canterlot under the gaunt assualt of Dragons and ponies,soon only Canterlot remained...
It was nothing like anyone remembered it,the shield barrier was 3times as large and towers were full with guards,while heavy walls and the most powerful magic in existance protected it from Silver sabres previously successful ariel forces.
...However the most powerful colt didnt intend to attack Canterlot with his airforces straight away,he was going to do it with the giant railway cannon known as "Hells gates".
24KM away from Canterlot-970mm artillary railway cannon:"Hells gates".
A quadtriple section of tracks were laid down just for the "Hells gates" slowly thundered down the railway line. Earth ponies guided it in until it came to a stop with a gigantic woosh of air.
"Loading sequence iniated".A red light came out from various points around the massive artillary piece,it towered over Silver sabres army and dawarfed the mighty Elder dragons themsleves.
One by one,the huge high explosive rounds were taken down by commendered trains and then loaded into a elavator which would then guide the massive shells to a winch. Guided by stern Earth ponys,the shells were then loaded into a revolver drum. "Loading complete,any non crew evacuate the area".
The first of the shells were loaded into the gun barrel."Traverse 23 degrees,elavate 45 degrees...perfect".
The barrel now stuck up over 1500metres in the air,it started to extend until the total height was almost hitting the cloud layer.
"Firing in ten seconds,prepare for shockwave".The earth pony crew donned helmets and grabbed onto railings or whatever they could find.
Ten seconds later Hells gates opened fired,signalling the start for the battle of Canterlot...
Its massive shells flew through the air visably,thier high vilocity broke the speed bairs and produced multiple sonic rainbooms,they then hit the shield at over mach12. For second it would look like Canterlots pink shield hold but nothing stood up to the 970mm cannon and lived.
Slowly it began to crack at the pont of impact with the first shell,then it split wide open and disappeted under the extreme first shell then exploded.
Canterlots main defense was split wide open and the defenders watched in horror as their walls and towers fell down under the massive shattered and a choking cloud of dust followed,blinding the defenders of Canterlot until they realised that a massive horde of parachutes had floated a insant the guards fortified positions were comprimised by hundreads of Unicorns. Pegasus and Dragons worked together as they fought a aeriel battle above the huge city.
Canterlot hall:Princess Celestia.
Equestias paranoid ruler stared out of her broken glass windows at her crumbeling empire,how could she has lost?. Silver sabre was ment to be dead and so was his fucking army,now he was back from hell and had smashed through over 45 of her battlions. Even Shining armour,considered by many to be the best field commanders the royal guard had was unable to stem the tide.
"How could this happen..."She hissed to herself,eyes bloodshot red and a nervous twitch in her ears."FUCK!".She smashed a priceless glass table with her hoofs in rage.
"Get me,Cadence,Shining armour,and the mane six in here...RIGHT NOW!".She screamed at one of her sabre would not attack his own sister,or maybe the elements of harmoney could destroy him once and for all...