What do the Guild Statues do?

There are four types of Guild Statues, and all guild members can receive various blessings by building and enhancing them.
*Newly built Guild Statues can be enhanced starting 12:00 a.m. (PST) the following day.
Reasons include:
• Units' stats are boosted in battle.
• Guild attendance rewards become greater and more extravagant.
• The Barracks are unlocked.