The phrase "attacks materialized" is correct and usable in written English.
It can be used to describe situations where attacks or aggressive actions have become real or have taken form, often in a military or strategic context.
Example: "After months of tension, the threats escalated, and the attacks materialized, leading to a full-scale conflict."
Alternatives: "attacks occurred" or "attacks manifested".
The follow-up dispatch made the United States victory clear, and the defeat of Tecumseh's confederacy became more certain when no second attack materialized.
But no attack materialized, night came, and the V Corps crossed the pontoon bridges back to Falmouth, with the 22nd acting as rear guard.
Albeit, the attack materialized days later as Operation Storm, a decisive victory to the HV in the Croatian War of Independence.
So far, no such attacks have materialized.
The Canadians dared them to push forward, but the attacks never materialized.
But the feared attacks never materialized, and in December 1860 the members of the so-called Southwest Expedition returned to St . Louisas heroes, having successfully repelled the Jayhawker threat.
But those attacks never materialized, and many American officials became perplexed in recent years over whether Iran had decided not to use terrorism as a weapon against the United States, at least outside the war zone in Iraq.
"Barrier," from 2011, a low, undulating concrete wall that begins on the exterior of the museum and continues inside the lobby, is a reminder of how contemporary fears and precautions — in this case, of terrorist bombings and attacks — are materialized, invading our inner sanctums.
The Taliban later stepped up its stabs in the capital, attacking a hotel frequented by Westerners and using the free media to announce its designs to further target establishments where Westerners congregate, but the threats of follow-up attacks never materialized.
The attack never materialized, but if it had, the band of marauders would have gotten a most unpleasant welcome.
