This is the 15122nd most frequent Turkish word.
silahlarına
"To their weapons" or "to their guns."
Here, 'silahlarına' refers to the weapons belonging to the soldiers, using the possessive suffix indicating ownership.
Silahlarına güvenen askerler zafere ulaştı.
Soldiers who trusted their weapons reached victory.
In this context, 'silahlarına' indicates the weapons belonging to a group (third person plural possessive) and acts as the object of the verb 'odaklamak' (to focus).
Tüm dikkatimi silahlarına odakladım.
I focused all my attention on their weapons.
Here, 'silahlarına' implies taking care of one's own weapons, portraying possession (their own) and the dative case indicating 'to' or 'onto.'