Investing deeply in a new agricultural creation forms a powerful bond between a person and his labor. A soldier whose mind is preoccupied with the unfulfilled joy of his recent investment cannot fully focus on the battlefield. Recognizing this human reality, the Torah exempts such a person from military service. He is sent home to complete the process of his creation, ensuring that his divided attention does not hinder the war effort or put his own life at risk in combat [ביאור שטיינזלץ].
The scope of this exemption extends well beyond a standard grape vineyard. The primary approach among commentators is that it includes any orchard of at least five fruit trees planted in organized rows, though barren trees are strictly excluded [תורה תמימה, רלב״ג, מלבי״ם, אדרת אליהו]. The concept of establishing an orchard is also applied broadly. A farmer qualifies for the exemption whether he planted the trees with his own hands, purchased the land, inherited it, or received it as a gift [תורה תמימה, אדרת אליהו]. Expanding an existing orchard through permitted agricultural methods also qualifies. However, the exemption is voided if the orchard was stolen or planted using forbidden agricultural mixtures [תורה תמימה, אדרת אליהו]. Furthermore, the orchard must belong exclusively to one individual; shared ownership between partners does not grant either of them an exemption [תורה תמימה].
The requirement that the farmer has not yet enjoyed his produce carries several layers of meaning. The primary approach among commentators connects this to the process of making the fruit ordinary and permitted for daily consumption. For the first three years after planting, the fruit is forbidden. In the fourth year, there is a Commandment to either eat the produce in Jerusalem or redeem it with money. A person who has not yet fulfilled this Commandment and redeemed his orchard returns home [רש״י, שד״ל, הטור הארוך, ביאור יש״ר, ביאור שטיינזלץ]. Because this specific Commandment is only practiced in the Land of Israel, this reason for exemption is limited to orchards planted there [תורה תמימה]. Alternatively, the unharvested status is linked to ancient celebrations. When an orchard finally yielded its first fruit after years of waiting, it was customary to dance in the fields to the sound of flutes. The exemption allows the farmer to participate in this profound joy and praise God for the harvest [רמב״ן, אבן עזרא, חזקוני, הטור הארוך]. A third perspective simply understands that the farmer has not yet begun the physical harvest of his crops [ביאור יש״ר].
The warning that a distracted soldier might die in battle carries a dual weight. On a practical level, it underscores the human tragedy of a person falling before enjoying the fruits of his labor, leaving a stranger to reap his harvest. On a spiritual level, refusing the priest's direct instruction to return home is considered a sin. It is this very act of disobedience that could ultimately cause the soldier to lose his life in combat [ברכת אשר על התורה].