This has come just when 10 days are left for 1st phase of voting to start for general election. And this battle of words and blatant expressions would go on to woo the voters. It's quite simple way to woo the rural and emotionally weak voters by invoking in them a spirit of nationality and patriotism.
If you analyse the speeches of Amit shah, Modi, Irani, Yogi and all BJP members after the air strike on Pakistan by the brave Indian Air Force pilots you will see they are using the fame and bravery of the Indian Army just to polarise a group of people.
You won't find even a single rally in which air strike is not mentioned, in which the avenge of our soldiers is not talked about. This is the mind boggling technique to attract the voters especially when you have full media control under you (experts at war mongering debates) Even if the Congress would have been in power it would have done the same thing.
Now coming to your question, from the point of view of the BJP this is absolutely right to call the Indian defense forces as Modi's forces because it is all politics and everything is fair during war and elections. But to put it on a factual and ethical ground, it is so uncanny to say so. This way YOGI is trying to say whatever modi wants he can do with the Army (meaning thereby he is the commander of Army). In other words you are defaming the Position of the President who is the supreme commander of all the forces.
Taking the credits of URI attack and now this Air strike BJP wants to put an image in front of the people, had MOdi been not the PM, there would have been no avenge taken by our Forces which is a false propaganda of the yogi and his group. Defense forces know their job and will do that at any cost no matter who is in the power. So just don't get emotionally taken off by the speeches of these politician.
Yogi is calling the Army as modi sena, but modi never bothers about the army (if you know about the video of the Army man showing the pathetic conditions of the food being served to army). So this incident itself puts a mark on his leadership.......