St. Basil the Great had teachings on this here is an article re this: http://www.incommunion.org/2006/02/19/st-basil-on-war-and-repentance/
The Trebniki/Euchologia of local Orthodox Churches contain Prayers
for the Blessing of Weapons. Does anyone know if priests and bishops
suffer a period of excommunication for blessing weapons of death?
I can access the the Trebnik of the Serbian Orthodox Church, 1993 edition.
These are ancient Services which have been used throughout the hiostory of
Orthodoxy. The use of the "swords" and "sabres" demonstrates that the
blessing of weapons by the Church is of ancient origin and is a long established
The Bishop or Priest comes out of the Altar to a table before the Amvon on which
the weapons are placed, and he censes the weapons crosswise while the Reader
begins as is common::
Reader: O Heavenly King, Trisagion,etc....Psalm 35. Alleluia.
Deacon: Let us pray to the Lord
The Bishop or Priest reads this prayer over the weapons::
O Lord our God, God of Power and Might, powerful in strength, strong in battle,
You once gave miraculous strength to Your child David granting him victory over
his opponent the blasphemer Goliath. Mercifully accept our humble prayer. Send
Your heavenly blessing upon these weapons (..naming each weapon..). Give to
them power and strength that they may protect Your holy Church, the poor and the
widows, and Your holy inheritance on earth, and make them horrible and terrible
to any enemy army, and grant victory to Your people for your glory, for You are
our strength and protection and unto You do we send up praise and glory, to the
Father, and the Son and the Holy Spirit, now and ever, and to the ages of ages.
Then the Priest sprinkles blessed water on the weapons saying::
Let the blessing of the Tri-une God, the Father, Son and Holy Spirit, come down
on and remain upon these weapons and those who carry them, for the protection of
the truth of Christ. Amen.
After this the soldiers carrying the weapons are blessed, with the prayer:
Be brave and let your heart be stronger and win victory over your enemies,
trusting in God, in the name of the Father, Son and Holy Spirit.
After this each soldier kisses the honourable cross.
This is the way to bless sword and sabre. If there is only one sword to be
blessed, or only one sabre, he says only once: this sword, or: this weapon. If
there are many, he says: bless these swords, or: bless these weapons.