Cannot find an online shooting game..Name Unknown

[Amdmunthasir]

Hi guys.,
After a long search i am here for help...
Before these smartphone age we use to play online games in pc in websites such as miniclip,onemorelevel,Friv...etc...
But this particular game i cannot find it and forgot the name also...I got addicted to the game and played for hours during my young age...Now this quarantine days tickled that game but i cannot find it...
Now the game description is as follows...
Its a shooting game...A city is occupied by terrorist and surrounded...Only a group of soldiers with a colonel are left and they have to defend by staying in the city centre and they also have a big rocket and the terrorists coming will try to shoot that rocket...

How the game works is,,since it is a city center there are four roads connecting to the centre...

So in each road soldiers stay and fight...
Each one is given particular weapon like one with normal gun,another with a sniper,another with a machine gun..

The game is provided by changing gameplay to each soldier by pressing f1,f2,f3,f4...
The gameplay goes on wave1,wave2....
Changing gameplay means we can change from one soldier to another because enemies come from all sides....


Thats all from my description....
Can anyone find me what game is that???
The only confirm thing i know is that it is an online game in a website...
Help me find it...Sorry for very long and combined description.....
Thank you....