"mass offensive" is a correct and usable phrase in written English.
You can use it to refer to an all-out attack or assault that is large in scale. For example, "The Allied forces launched a massive offensive against the enemy troops."
Hughes's counsel had argued the texts do not prove he is racist and were a small fraction of a mass of offensive "jokes" on his phone "at the expense of almost every imaginable minority".
From the one-yard line, Newton did his best Superman impression, flying over the mass of offensive and defensive linemen to tally the TD.
In order to combat this evil, they organised a mass "prayer offensive" at the site with the triple-barreled intention of 1. reversing any spells cast by the witches, 2. hopefully changing politicians' minds about things they disagree with (such as abortion and gay people) and 3. sending out good vibes to ensure a bushfire-victim free summer.
The mostly peaceful protest included a few violent incidents, but what dominated its culmination were the police offensive and mass arrests at the end.
Certainly thousands of Turkish troops, backed by tanks and artillery, have massed for a possible offensive against Kurdish PKK rebels in Iraq.
He urged a mass mobilization for "a decisive offensive".
It has also allowed the government to mass firepower when on the offensive or when countering rebel attacks.
Ackerman McQueen designed the confrontational campaigns in favour of gun rights which went on the offensive after each mass killing in the US by portraying any new restrictions as an attempt by the government to "ban your guns".
By John Cassidy October 7, 2015 Ben Carson, pictured here in late September, and other Republican Presidential candidates have offered reactions to the Umpqua mass shooting that range from offensive to inconsequential.
